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6. The continuous cycle of water precipitation and evaporation 16. Ultraviolet radiation is filtered by
is called a. the ozone shield.
a. rain. b. the inversion layer.
b. weather. c. Earth’s magnetic field.
c. climate. d. the greenhouse.
d. hydrologic cycle. 17. The term that does not describe a layer of the atmosphere is
7. Tiny solid or liquid smoke, soot, dust, and salt crystals found in a. thermosphere.
the atmosphere are b. stratosphere.
a. of no concern. c. mesosphere.
b. harmful, reducing rainfall. d. temposphere.
c. aerosols. 18. Uneven heating of Earth’s surface directly leads to
d. clouds. a. rain.
8. Atmospheric pressure is measured using a b. condensation.
a. barometer. c. convection.
b. psychrometer. d. thermal radiation.
c. thermometer. 19. A general horizontal movement of air is called
d. hydrometer. a. wind.
9. Which molecules in the atmosphere absorb infrared b. unusual.
radiation? c. hurricane.
a. Water d. storm.
b. Oxygen 20. Air moving from the ocean to the land is called a
c. Carbon dioxide a. tsunami.
d. a and c b. sea breeze.
10. What is the process of heating the atmosphere by the c. wind.
absorption of solar radiation and reemission of infrared d. storm.
radiation? 21. A rapidly moving “stream” of air near the top of the troposphere is
a. Solar energy a. an unusual wind pattern.
b. Greenhouse effect b. a jet stream.
c. Ozone depletion c. El Niño.
d. Global emissions d. impossible.
11. Near the surface, what happens to the temperature of the 22. Water vapor in the atmosphere does not
atmosphere with increasing altitude? a. participate in weather.
a. Increases b. act as a greenhouse gas.
b. Decreases c. maintain life on Earth.
c. Stays the same d. filter ultraviolet radiation out of the atmosphere.
d. Depends on the season
23. The amount of water vapor at a particular temperature is defined as
12. What is the layer of the atmosphere where we live? a. effective humidity.
a. Mesosphere b. actual humidity.
b. Stratosphere c. absolute humidity.
c. Troposphere d. humidity.
d. Ozone layer
24. The temperature at which condensation begins is the
13. A layer of the atmosphere where the temperature increases with a. dew point.
height is a (an) b. boiling point.
a. conversion. c. frost point.
b. inversion. d. melting point.
c. diversion.
25. The basic shapes of clouds do not include
d. cloud.
a. cirrus.
14. What is the boundary between the troposphere and the b. cotton tuffs.
stratosphere? c. cumulus.
a. Thermal plane d. stratus.
b. Tropopause
26. An airplane flying at about 6 km (20,000 ft) is above how much
c. Stratopause
of Earth’s atmosphere?
d. Inversion layer
a. 99 percent
15. In what lower layer of the atmosphere would transcontinental b. 90 percent
aircraft escape convective turbulence? c. 75 percent
a. Mesosphere d. 50 percent
b. Stratosphere
c. Troposphere
d. Ionosphere

22-21 CHAPTER 22 The Atmosphere of Earth 561